/*
 * Copyright 2016, The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.architecture.blueprints.todoapp.data.source.local

import android.content.Context
import android.database.sqlite.SQLiteDatabase
import android.database.sqlite.SQLiteOpenHelper
import com.example.android.architecture.blueprints.todoapp.data.source.local.TasksPersistenceContract.TaskEntry.COLUMN_NAME_COMPLETED
import com.example.android.architecture.blueprints.todoapp.data.source.local.TasksPersistenceContract.TaskEntry.COLUMN_NAME_DESCRIPTION
import com.example.android.architecture.blueprints.todoapp.data.source.local.TasksPersistenceContract.TaskEntry.COLUMN_NAME_ENTRY_ID
import com.example.android.architecture.blueprints.todoapp.data.source.local.TasksPersistenceContract.TaskEntry.COLUMN_NAME_TITLE
import com.example.android.architecture.blueprints.todoapp.data.source.local.TasksPersistenceContract.TaskEntry.TABLE_NAME

class TasksDbHelper(
    context: Context
) : SQLiteOpenHelper(context, DATABASE_NAME, null, DATABASE_VERSION) {

  override fun onCreate(db: SQLiteDatabase) {
    db.execSQL(SQL_CREATE_ENTRIES)
  }

  override fun onUpgrade(db: SQLiteDatabase, oldVersion: Int, newVersion: Int) {
    // Not required as at version 1
  }

  override fun onDowngrade(db: SQLiteDatabase, oldVersion: Int, newVersion: Int) {
    // Not required as at version 1
  }

  companion object {
    val DATABASE_VERSION = 1
    val DATABASE_NAME = "Tasks.db"
    private val TEXT_TYPE = " TEXT"
    private val BOOLEAN_TYPE = " INTEGER"
    private val COMMA_SEP = ","
    private val SQL_CREATE_ENTRIES = "CREATE TABLE " + TABLE_NAME + " (" +
        COLUMN_NAME_ENTRY_ID + TEXT_TYPE + " PRIMARY KEY," +
        COLUMN_NAME_TITLE + TEXT_TYPE + COMMA_SEP +
        COLUMN_NAME_DESCRIPTION + TEXT_TYPE + COMMA_SEP +
        COLUMN_NAME_COMPLETED + BOOLEAN_TYPE +
        " )"
  }
}
